Pic programming

Possibly. However there are lots of reports of problems with that particular programmer.

Also if you want to do USB with a PIC, then you may want to consider upgrading to Microchip 18F USB family of chips. USB 2.0 compliant, with lots more features.

The 18F4550 is a 40 pin USB powerhouse.

BAJ

Reply to
Byron A Jeff
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Is it possible to adapt the

formatting link
parallel port programmer for the pic16C745? tia

Reply to
Cathryn

Hmmm... what's your opinion on it compared to the ftdichip product?

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Best Regards,
Mike
Reply to
Active8

upgrading

It seems that some programmers are limited to a very restricted subset of pics whereas others can do almost all of them. I was just wondering if the apparent lack of support of some programmers to some pics is simply a statement "we haven't tried, but it might work", or is there really a difference in the way the various devices are programmed. I am also wondering if one would actually have to change the hardware circuit of the programmer when working with different pics, or would the difference normally be in the software which runs the programmer.

tia

Reply to
Cathryn

IME with ICSP and the 16f' series, the software is lacking. Instead of using a data file that the user can modify to set parameters, it's coded in. An example would be IC-Prog which will now handle the

16f648. Before, it only handled the 628. The difference was in the amount of memory. It wouldn't burn code memory beyond the capacity of the 628.

I started writing my own code with some help from the open source programs. Maybe I'll just buy one from uChip and cuss them every time I have to upgrade. Cussing takes less time.

I can't comment on Atmel, but I haven't seen 20 different hardware/software combos for that line. Less confusing and possible the path of least resistance.

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Best Regards,
Mike
Reply to
Active8
[SNIPPAGE]

There is a difference in the way that devices are programmed.

No. The basic hardware configuration is pretty much the same for all serially programmed PICs.

BINGO! Each family of PICs have very different algorithms for programming. In short on each you wiggle the same pins. But on each of wiggle the pins in different ways to program them.

So what happens is that active programmer developers are continually adding new programming algorithms for new parts, while the less active ones fall off the side of the road. The latter has happened to programs like picprg and FPP. Programs like ICProg and Pikdev and hardware programmers such as the Wisp628 and EasyProg are adding new algorithms all the time.

When I get back into PIC programmer development, I plan to standardize on PikDev, as Alain is a strong developer. Also he was real smart by separating the programming engine from UI. So it should be fairly easy to create a Windows port of the command line programmer, with a GUI interface to follow.

BAJ

Reply to
Byron A Jeff

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